WO2011157220A1 - Energy storage type wind-power generating system - Google Patents

Abstract

An energy storage type wind-power generating system is disclosed. The system includes a wind-power machine (40), a compressor (41), at least one energy storage (42), a generator (43), a pressurized heat supply system (44), and a depressurized refrigeration supply system (45). Through the pressurized heat supply system and the depressurized refrigeration supply system, the by-products such as hot and cold water, which are produced when the gas is compressed and expanded, can be stored and used as a heat source and a refrigeration source. In the wind-power generating system, wind energy can be converted into mechanical energy and high-pressure gas compressed by the compressor can be stored in a gas vessel, thus the generator can be driven by air motor to generate electricity. Therefore, the wind-power generating system cannot be limited to a wind speed, has low cost and environment friendliness.

Description

 Energy storage wind power generation system

 The invention relates to an energy storage wind power generation system, which mainly uses wind power as a power source, converts it into mechanical energy to drive an air compression system, and stores high pressure gas in an energy storage gas cylinder, when the power is to be used, The gas output driving motor in the energy storage cylinder drives the generator to supply electricity, and when the compressed gas and the gas output are output, the pressure heating and the pressure reducing cooling can be respectively generated to provide the water heater, the electric furnace, and the cold. , the heat or cooling source required for the heating system.

Background technique

 Compared with the safety concerns and environmental protection problems in nuclear power generation, thermal power generation and hydropower generation, wind power generation is undoubtedly a better choice for safer and not damaging the environment, especially because of the demand for nuclear power and thermal power generation. The massive exploitation of natural resources such as oil, gas and coal mines not only causes damage to the natural environment and the warming effect of the earth, but also faces the problem of energy crisis. Green energy such as wind energy is gradually gaining importance and has become an active development in advanced countries such as Europe and the United States. The subject of the study.

 According to the types of current wind power generation systems, they can be roughly divided into three types: independent type, hybrid type, and parallel type. The descriptions are as follows:

 1. Stand-alone system (small wind energy generator), please refer to Figure 1 as shown in Figure 1. It mainly converts wind energy into mechanical energy to drive wind energy generator 10 to operate and output direct current. The rectifier 11 converts direct current into stable voltage supply DC. The load 12 is used, or the direct current is converted into an alternating current power supply to the alternating current load 15 via the inverter 14, or stored in the battery pack 13 for standby, so that the direct current stored in the battery pack 13 can be stored when there is no wind. It is converted into alternating current by the inverter 14, and the power required for the AC load 15 is supplied. Since the output power is affected by the wind speed intensity and environmental factors, the system must set a battery pack 13 of a larger capacity as an auxiliary power source to adjust the wind power change. .

2. Hybrid system (medium-type wind energy generator), please refer to FIG. 2, which basically uses the wind power generator 20 to output AC power. After being converted into a stable voltage by the rectifier 21, the DC load 22 is directly supplied. Either it is stored in the battery pack 23, or it is converted into an AC power supply AC load 25 by the inverter 24, and the difference from the aforementioned independent system is that it is provided with an auxiliary generator or solar power generation. The auxiliary power generating device 26 can directly supply the AC load 25 by switching the switch 27 by the AC or DC generated by the auxiliary power generating device 26, or can install the auxiliary power generating device. The AC power generated by the 26 is converted to a stable voltage by another rectifier 28 and stored in the battery 23 for standby. In this system, the battery pack capacity can be halved because of the auxiliary power generating device 26.

 3. Parallel system (large wind energy generator), please refer to Figure 3, which is the most widely used system in wind power generation. The system is equipped with switcher 34 as automatic conversion. In the case of wind, use The wind power generator 30 outputs alternating current, and is converted into a stable direct current by the rectifier 31, and then converted into an alternating current supply alternating current load 33 by the inverter 32, and when the wind is small or no wind, the power is supplied by the parallel power grid line 35. In order to make the power supply stable and stable, it is also the only wind power generation system in each system that can not use the battery pack and can be connected to the mains.

 From the above description, it can be seen that in the existing various wind power generation systems, in addition to the parallel type wind power generation system, the independent type wind power generation system and the hybrid type wind power generation system need to use the battery pack to store electric energy as an auxiliary power source, so that Adjusting the wind power to cause power supply when the power generation is unstable. Generally, the output efficiency of the wind power generator is between 20% and 40%, and the energy storage efficiency is limited by the service life of the battery pack. The daily decline will also cause the wind power efficiency to decrease day by day. Therefore, it is necessary to replace the battery pack within a certain period of time. As a result, the replacement cost and cost of the battery pack will be increased, and the cost of wind power generation will be relatively increased. And the waste battery will also cause secondary pollution to the environment, and it is still difficult to truly achieve the goal of green energy.

 Moreover, such a wind power generation system relies on the wind as a power, so that only when the wind speed reaches a certain value (about 3 to 4 m/s) or more, power generation can be performed, and once the wind speed is higher than a certain value (20 m/s), It may cause the wind energy generator to burn. In other words, the existing wind power generation system must be limited to a certain range of wind speeds. If the wind speed is too small, it will not be able to generate electricity. If the wind speed is too high, the equipment may be damaged. An important issue that needs to be solved and broken through in operation.

Summary of the invention

In view of the wind speed limitation and the replacement of the battery pack in the existing wind power generation system, the present invention proposes an energy storage type wind power generation system, which abandons the mode in which the conventional wind energy is converted into mechanical energy and directly ignites the generator to generate electricity. Instead, the wind energy is converted into a mechanical energy-controlled air compression system to store the high-pressure gas in the energy storage cylinder, and then the output gas of the energy storage cylinder is used to drive the generator to supply power to the AC and DC load, so that the battery pack can be eliminated. The use of it effectively solves its replacement costs and derived environmental problems. At the same time, the use of wind speed will be free from the minimum and maximum wind speeds, enabling it to effectively use wind energy. Excellent industrial economic benefits and practical value.

 Another object of the present invention is to convert the air into a mechanical energy transmission air compression system through its wind energy, and then use the air pressure to drive the generator to generate electricity, so that when the air compressor pressurizes the gas in the energy storage cylinder, The use of pressurized heating to provide electricity water heaters, electric furnaces or indoor heating systems, thereby reducing electricity consumption and achieving excellent practical economic benefits.

 Another object of the present invention is to convert the air into a mechanical energy transmission air compression system through its wind energy, and then use the air pressure to drive the generator to generate electricity, so that when the gas output of the energy storage cylinder drives the generator, a pressure reduction is formed. Cooling function, in order to provide air-conditioner or indoor air-conditioning system, in order to reduce electricity consumption, and achieve excellent practical economic benefits.

 In order to achieve the above object, the present invention adopts the following technical solutions:

 An energy storage wind power generation system mainly comprises:

 a wind energy machine, driven by wind, to convert wind energy into mechanical energy to sway the compressor; a compressor, the wind energy machine is swayed to compress the gas inside the accumulator; at least one accumulator, It is used for storing high pressure gas compressed by the compressor, and can output gas to ignite the generator;

 A generator is composed of a pneumatic motor and an alternating current power generating motor. The air motor is driven by the gas outputted by the energy storage device, and then the air motor drives the alternator to generate electricity;

 a pressurized heating system, comprising a liquid energy/vacuum energy converter, configured to cooperate with a compressor to convert hydraulic pressure into air pressure and store the energy in the energy storage device, and generate heat energy from the gas output port to supply the heat source;

 a step-down cooling system, after the piping is connected to the foregoing energy storage device and the generator, the storage device outputs a gas to drive the low temperature of the generator to supply a cold source;

 Accordingly, a system for converting wind energy into air pressure storage and driving the generator to connect the wind power generation mode and having the functions of cooling and heating in the process is constructed.

 The compressor of the present invention is provided with a liquid energy/air energy converter for compressing and storing the gas inside the accumulator.

The invention has the advantages that the invention converts wind energy into mechanical energy, and the compressor is combined with the liquid energy energy energy converter to store the gas in the high pressure gas cylinder of the energy storage device, and then drives the motor through the gas output in the high pressure gas cylinder. Drive generator to achieve the expected power generation function, and the voltage and current generated by it are stable, can be directly used for AC and DC loads, and can generate heating and cooling separately during energy storage and power generation. The ability to supply the cold and heat sources required for water heaters, air conditioners or indoor cold and heating systems, further reduce the amount of electricity used, and has the economic benefits and practical value of power generation and energy saving. DRAWINGS

 1 is a block diagram of a system of a conventional independent wind power generation system.

 2 is a block diagram of a system of a conventional hybrid wind power generation system.

 3 is a block diagram of a conventional parallel wind power generation system.

 4 is a block diagram showing the system of the wind energy power generation refrigeration and heating system of the present invention.

 Fig. 5 is a schematic view showing the system structure of the wind power generation refrigeration and heating system of the present invention.

 Fig. 6 is a schematic view showing the system configuration of the wind energy power generation refrigeration and heating system of the present invention.

 Component symbol description

 10 wind energy generator 11 rectifier 12 DC load 13 battery pack

14 inverter 15 AC load 20 wind generator 21 rectifier

22 DC load 23 battery pack 24 inverter 25 AC load

26 auxiliary power generation unit 27 switcher 28 rectifier 30 wind energy generator

31 rectifier 32 inverter 33 AC load 34 switch

35 city power grid road 40 wind energy machine 401 blade 41 compressor

42 energy storage 421 high pressure gas cylinder 422 high pressure gas cylinder 43 generator

431 air motor 432 AC generator motor 44 pressurized heating system 441 liquid energy / empty energy converter

 45 step-down cooling system 46 DC load 47 AC load

detailed description

 The system block diagram of FIG. 4, the system structure diagram of FIG. 5, and the system configuration diagram of FIG. 6 are preferred embodiments of the present invention. As shown in the figure, the present invention is mainly provided with a wind energy machine 40, The compressor 41, an accumulator 42 and a generator 43 are formed, and the pressurized heating system 44 can be externally connected to the compressor 41, and the external pressure can be externally supplied to the accumulator 42 and the generator 43. The cold system 45, in addition to the power generated by the generator 43, can directly supply the DC load 46 and the AC load 47. among them:

The wind energy machine 40 is a device for converting wind energy into mechanical energy, which can be composed of a plurality of blades 401 (vertical configuration shown in the figure) which are arranged in a horizontal or vertical type, and the rotating shaft (not labeled) can be directly or The indirect transmission compressor 41 is configured to store the gas under pressure in the accumulator 42 for good wind. The wind energy machine 40 can be set at a certain height or higher to obtain a better wind receiving environment; the compressor 41 is provided with a liquid energy/air energy converter, which is shaken by the rotating shaft of the wind energy machine 40. And automatically adjust the compression efficiency according to the size of the wind speed, that is, regardless of the wind speed, the compressor 41 can be used to pressurize the gas to be stored inside the accumulator 42 or the high pressure gas cylinder (plus the accumulator) ) 421, 422;

 The accumulator 42 can be configured as a predetermined capacity (the column can be designed to match the height setting requirement of the wind energy machine and can be set to a predetermined height), or can be connected with a plurality of high-pressure gas cylinders 421 and 422. The storage amount, using the column height of the accumulator 42 as the height setting of the wind energy machine 40;

 The generator 43 includes a pneumatic motor 431 and an AC power generating motor 432. The air motor 431 is driven by the air pressure output from the accumulator 42, and the air motor 431 drives the AC power generating motor 432 to generate electricity, because it is energy storage. The gas outputted by the device 42 is used as a power source instead of directly generating power by the wind, so the power output is stable, and the generated alternating current can be directly supplied to the AC load 47, or the converted DC load 46 can be used after being converted;

 The pressurized heating system 44 can be a hot water storage cylinder with a cold heat exchange function, and a liquid energy I energy energy converter 441 is disposed inside the compressor, and is connected to the compressor 41 to convert the compressor 41 into a pneumatic storage. In the foregoing energy storage device 42, the liquid energy I air energy converter 441 has a gas outlet temperature of 80 to 180 ° C, and the high temperature heat energy can be used to replace the solar energy or the general water heater and the indoor heating system; The pressure supply cooling system 45 may be an ice water storage cylinder having a cold heat exchange function, and the direct piping is connected between the foregoing energy storage device 42 and the generator 43, whereby the output gas of the energy storage device 42 is stepped down to drive the generator 43. When the outlet temperature reaches a temperature of 40 to 60 ° C, the low temperature cold source is connected to the air conditioner or the indoor air conditioning system;

Accordingly, when the wind power generation cooling and heating system of the present invention, which is composed of the above-mentioned functional structure, is applied to a general house, it is possible to manufacture one or more sets of the appropriate positions according to the difference in the amount of electricity used or its seasonal wind direction. The wind energy machine 40 and the compressor 41 are respectively connected to the liquid energy I empty energy converter 441 of the high pressure heating system 44, thereby storing the gas under pressure in the energy storage device 42, the number of the energy storage devices 42 The accumulator 42 can be connected to the generator 43 according to actual needs, thus forming a complete system loop. When there is wind (regardless of the wind speed), the wind energy can be driven by the wind energy machine 40 to convert it into mechanical energy. In order to drive the compressor 41 to match the liquid energy I, the air energy converter 441 converts the hydraulic pressure into air pressure and stores it in the preset energy storage device 42. When the power is to be used, the air pressure of the energy storage device 42 is stepped down and outputted. Drive generator 43 to run The power supply to supply various electrical appliances is required to achieve the desired wind power generation function, and in the process of converting hydraulic pressure into air pressure, it is necessary to generate pressurized heating to supply water heaters, electric furnaces or indoor heating systems, and heated swimming pools. The heat energy required for the warmth, and the pressure-reducing output of the air pressure can generate the pressure-reducing cooling effect to supply the air conditioner or the indoor air conditioner, so that the economic benefits of using the wind power generation can be achieved. Moreover, because it has both heating and cooling functions, it can supply electric appliances such as water heaters, electric furnaces, air conditioners, indoor cooling and heating systems, etc., so that it can save its electricity consumption. Industrial economic benefits and practical value of power generation and energy saving.

 Summarizing the performance of the energy storage wind power generation refrigeration and heating system of the present invention, it has the following competitive advantages:

1. There is no minimum wind speed limit, so the breeze can also store energy for power generation;

 2. No battery is used, so there is no cost reduction and replacement of energy storage accessories and secondary pollution problems;

 3. In the case of sufficient wind, its heating capacity can replace solar hot water, electric furnace or indoor heating system;

 4. As long as the accumulator has gas, its cooling capacity can continue to provide cold air to the room;

 5. It can easily increase its energy storage capacity, and there will be no battery life problem, which will increase the power generation cost;

6. The gas drive motor is used to drive the generator to generate electricity, and the voltage and current are stable;

 7. It can automatically adjust the power generation load with the power consumption, without wasting the stored energy;

 8. The energy storage capacity is simple, so there is almost no limit to the power generation time;

 9. Do not use battery energy storage, so there is no high temperature or low temperature causing battery efficiency reduction;

10. Because there is no minimum wind speed limit, there is almost no wind speed and wind direction problem in the erection site selection. Summarizing the above description, it can be seen that the design of the present invention in the use of wind energy for power generation is to abandon the design of the conventional direct drive generator for power generation, but to change The wind energy is converted into mechanical energy and the compressor is combined with the liquid energy energy energy converter to store the gas in the high pressure gas cylinder of the energy storage device, and then the gas output driving motor in the high pressure gas cylinder drives the generator to operate, and the expected operation is achieved. The power generation function, and the voltage and current generated by it are stable, can be directly used for AC and DC loads, and in the process of energy storage and power generation, the ability to generate heating and cooling can be separately generated, so that it has the supply water heater. , the ability of air conditioners or indoor cold and heating systems to reduce the amount of electricity and heat, further reduce the amount of electricity used, and achieve the economic benefits and practical value of power generation and energy-saving dual-effects. Overall, it is an excellent and outstanding Innovative design, 提出 filed a patent application in accordance with the law.

Claims

Rights request  An energy storage wind power generation system, characterized in that it mainly comprises:  a wind energy machine, driven by wind, to convert wind energy into mechanical energy to sway the compressor; a compressor, swayed by the wind energy machine for compressing and storing the gas inside the accumulator; at least one accumulator , for storing high pressure gas compressed by the compressor, and outputting gas to ignite the generator;  A generator is composed of a pneumatic motor and an alternating current power generating motor. The air motor is driven by the gas outputted by the energy storage device, and then the air motor drives the alternator to generate electricity;  a pressurized heating system, comprising a liquid energy/vacuum energy converter, configured to cooperate with a compressor to convert hydraulic pressure into air pressure and store the energy in the energy storage device, and generate heat energy from the gas output port to supply the heat source;  a step-down cooling system, after the piping is connected to the foregoing energy storage device and the generator, the storage device outputs a gas to drive the low temperature of the generator to supply a cold source;  Accordingly, a system for converting wind energy into air pressure storage and driving the generator to connect the wind power generation mode and having the functions of cooling and heating in the process is constructed.  2. The energy storage wind energy power generation system according to claim 1, wherein:  The wind energy machine is composed of a plurality of blades arranged in a horizontal or vertical configuration, and the rotating shaft can directly or indirectly drive the compressor.  3. The energy storage wind energy power generation system according to claim 1, wherein:  The accumulator consists of at least one high pressure gas cylinder.  4. The energy storage wind energy power generation system according to claim 1, wherein:  The energy storage device is formed into a cylindrical shape, and the cylindrical body can be used as a height setting device of the wind energy machine.  5. The energy storage wind energy power generation system according to claim 1, wherein:  The pressurized heating system is a hot water storage cylinder with a cold heat exchange function, and a liquid energy/air energy converter is disposed inside.  6. The energy storage wind energy power generation system according to claim 1, wherein:  The step-down cooling system is an ice water storage tank with a cold heat exchange function.  The energy storage type wind power generation system according to claim 1, wherein the compressor is provided with a liquid energy/vacant energy converter for compressing and storing the gas inside the energy storage device. 8. An energy storage wind power generation system, characterized in that it mainly comprises: a wind energy machine, driven by wind, to convert wind energy into mechanical energy to sway the compressor; a compressor, swayed by the wind energy machine for compressing and storing the gas inside the accumulator; at least one accumulator , for storing the high pressure gas compressed by the compressor, and outputting the gas to ignite the generator;  a generator consisting of a pneumatic motor and an alternating current generator motor, the air motor is driven by the gas output by the accumulator, and then the air motor drives the alternator to generate electricity;  Accordingly, an indirect wind power generation system that converts wind energy into air pressure storage and drives the generator is constructed.